Automatic rotary demolding structure for straight cylinder injection molding

Abstract

The utility model relates to the technical field of straight tube injection molding, and discloses an automatic rotating demolding structure for straight tube injection molding, which comprises a base, the top of the base is fixedly connected with a first fixing plate, and the inside of the first fixing plate is fixedly connected with a first hydraulic oil cylinder. Through movement of a fixing rod, a fixing block makes contact with the bottom end of the interior of a straight barrel, then the fixing rod drives a second supporting arm to move, the second supporting arm drives a first supporting arm to be converted from an unfolded state to a folded state till the hinged position of the first supporting arm and the second supporting arm makes contact with the inner wall of the straight barrel, the straight barrel is clamped, and then a second air cylinder drives a connecting plate and a rack to move; the rack drives the gear to rotate, the gear drives the first rotating block and the fixing rod to rotate, and therefore the first supporting arm and the second supporting arm drive the straight cylinder to rotate, the rotated straight cylinder cannot adhere to the cavity, the straight cylinder is effectively prevented from adhering to the inner wall of the cavity, and it is guaranteed that the straight cylinder is unobstructed in demolding and cannot be damaged; therefore, the production cost is prevented from being increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to straight cylinder injection technology field, concretely for a kind of automatic rotation demolding structure for straight cylinder injection. BACKGROUND

[0002] Straight cylinder injection is a kind of injection molding process for cylindrical or tubular structure product (such as pen barrel, container tube etc.). Its core feature is that mold cavity is designed as straight cylinder, and through the filling, pressure maintaining, cooling and solidification of molten plastic in closed cavity, hollow or solid cylinder piece with uniform structure and stable size is formed. On material selection, it is commonly used in polyethylene (PE), polypropylene (PP) and other plastics with good fluidity and low shrinkage, and engineering plastics such as ABS or PC can also be used according to requirements. The process is efficient and suitable for mass production, and is widely used in daily necessities, electronic accessories, automobile pipelines and other fields.

[0003] Demolding usually uses ejection mechanism to separate and push out straight cylinder from mold cavity, and if straight cylinder is not completely separated from cavity or adheres to mold surface, it will cause ejection difficulty, straight cylinder deformation or even damage, which will cause frequent shutdown for cleaning mold, prolong production cycle and increase production cost. UTILITY MODEL CONTENT

[0004] To achieve the above object, the utility model provides an automatic rotation demolding structure for straight cylinder injection.

[0005] The technical scheme of the utility model is realized as follows: an automatic rotation demolding structure for straight cylinder injection, comprising a base, a first fixed plate is fixedly connected to the top of the base, a first hydraulic oil cylinder is fixedly connected inside the first fixed plate, a movable mold is fixedly connected to one side of the first hydraulic oil cylinder, a core is fixedly connected to one side of the movable mold, a demolding mechanism for automatic rotation demolding is arranged on the movable mold, a first air cylinder is fixedly connected inside the movable mold, a supporting plate is fixedly connected to one side of the first air cylinder, a first rotating block is rotatably connected inside the supporting plate, a fixed rod is fixedly connected to one side of the first rotating block, a connecting rod is slidably connected inside the fixed rod, a fixed block is fixedly connected to one side of the connecting rod, a spring is sleeved on the rod body of the connecting rod, a first fixing seat is fixedly connected to one side of the fixed block, the first fixing seat is hinged with a first supporting arm, a second fixing seat is fixedly connected to the outer circular surface of the fixed rod, the second fixing seat is hinged with a second supporting arm, a gear is fixedly connected to the outer circular surface of the first rotating block, the gear is meshingly connected with a rack, a connecting plate is fixedly connected to the top of the rack, a second air cylinder is fixedly connected to the other side of the supporting plate, the base is hinged with a second rotating block, a fixed mold is fixedly connected to the top of the second rotating block, a cavity is formed in one side of the fixed mold, and a plastic pipe is fixedly connected to the top of the fixed mold.

[0006] Preferably, the spring is fixedly connected with the fixed block and the fixed rod respectively, and the first supporting arm is hinged with the second supporting arm.

[0007] Preferably, the connecting plate is fixedly connected with the second cylinder, one end of the rack is fixedly connected with a first sliding block, the first sliding block is in T shape, and the first sliding block is slidingly connected with the supporting plate.

[0008] Preferably, a discharging port is formed in the top of the base.

[0009] Preferably, a second fixed plate is fixedly connected with the top of the base, and a round rod is fixedly connected with one side of the second fixed plate.

[0010] Preferably, the first fixed plate is fixedly connected with the round rod, and the movable mold is slidingly connected with the round rod.

[0011] Preferably, a second hydraulic oil cylinder is fixedly connected in the second fixed plate, a connecting block is fixedly connected with one side of the second hydraulic oil cylinder, the connecting block is hinged with a connecting seat, a second sliding block is fixedly connected with one side of the connecting seat, and a sliding groove is formed in one side of the fixed mold.

[0012] Preferably, the second sliding block and the sliding groove in the fixed mold are both in T shape, and the second sliding block is slidingly connected with the sliding groove in the fixed mold.

[0013] The utility model has the advantages of the following:

[0014] The utility model discloses a structure is provided with first fixed plate, fixed block, fixed rod, connecting rod, spring, second fixed seat, first supporting arm, second supporting arm, second cylinder, connecting plate, rack, gear, first rotating block, second hydraulic oil cylinder, connecting block, connecting seat, second sliding block and fixed mold, and the movable mold is provided with the sliding groove. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the whole structure schematic drawing of the utility model;

[0016] Figure 2It is the first hydraulic oil cylinder relative position schematic view of the utility model;

[0017] Figure 3 It is the fixed block relative position schematic view of the utility model;

[0018] Figure 4 It is the second rotating block relative position schematic view of the utility model;

[0019] Figure 5 It is the second sliding block relative position schematic view of the utility model;

[0020] Figure 6 It is the fixed rod relative position schematic view of the utility model;

[0021] Figure 7 It is the rack relative position schematic view of the utility model;

[0022] Figure 8 It is the first sliding block relative position schematic view of the utility model;

[0023] Figure 9 It is the first support arm relative position schematic view of the utility model.

[0024] Wherein, the reference signs in the drawing are:

[0025] 1, base; 2, discharge port; 3, first fixed plate; 4, first hydraulic oil cylinder; 5, movable mold; 6, core; 7, demolding mechanism; 701, first cylinder; 702, support plate; 703, first rotating block; 704, fixed rod; 705, connecting rod; 706, fixed block; 707, spring; 708, first fixed seat; 709, first support arm; 710, second support arm; 711, second fixed seat; 712, gear; 713, rack; 714, first sliding block; 715, connecting plate; 716, second cylinder; 8, round rod; 9, second fixed plate; 10, fixed mold; 11, cavity; 12, plastic conveying pipe; 13, second rotating block; 14, second hydraulic oil cylinder; 15, connecting block; 16, connecting seat; 17, second sliding block; 18, sliding slot. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0027] For example, Figures 1-9As shown, the embodiment provides a straight barrel injection automatic rotation demolding structure, which comprises a base 1, a first fixed plate 3 fixedly connected to the top of the base 1, a first hydraulic oil cylinder 4 fixedly connected to the inside of the first fixed plate 3, a movable mold 5 fixedly connected to one side of the first hydraulic oil cylinder 4, a core 6 fixedly connected to one side of the movable mold 5, a demolding mechanism 7 of automatic rotation demolding arranged on the movable mold 5, a first air cylinder 701 fixedly connected to the inside of the movable mold 5, a supporting plate 702 fixedly connected to one side of the first air cylinder 701, a first rotating block 703 rotatably connected to the inside of the supporting plate 702, a fixed rod 704 fixedly connected to one side of the first rotating block 703, a connecting rod 705 slidably connected to the inside of the fixed rod 704, a fixed block 706 fixedly connected to one side of the connecting rod 705, a spring 707 sleeved on the rod body of the connecting rod 705, a first fixed seat 708 fixedly connected to one side of the fixed block 706, the first fixed seat 708 being hinged with a first supporting arm 709, a second fixed seat 711 fixedly connected to the outer circular surface of the fixed rod 704, the second fixed seat 711 being hinged with a second supporting arm 710, a gear 712 fixedly connected to the outer circular surface of the first rotating block 703, the gear 712 being meshingly connected with a rack 713, a connecting plate 715 fixedly connected to the top of the rack 713, a second air cylinder 716 fixedly connected to the other side of the supporting plate 702, the base 1 being hinged with a second rotating block 13, a fixed mold 10 fixedly connected to the top of the second rotating block 13, a cavity 11 formed in one side of the fixed mold 10, and a plastic conveying pipe 12 fixedly connected to the top of the fixed mold 10.

[0028] Further, the spring 707 is fixedly connected to the fixed block 706 and the fixed rod 704 on both sides, and the first supporting arm 709 is hinged with the second supporting arm 710.

[0029] By adopting the above technical scheme, when the connecting rod 705 moves towards the fixed rod 704, the first supporting arm 709 and the second supporting arm 710 are folded, at the same time, the connecting rod 705 drives the fixed block 706 to press the spring 707, but after the demolding mechanism 7 completes the demolding of the straight barrel, the spring 707 can make the first supporting arm 709 and the second supporting arm 710 unfold again.

[0030] Further, the connecting plate 715 is fixedly connected with the second air cylinder 716, one end of the rack 713 is fixedly connected with a first sliding block 714, the first sliding block 714 is in a "T" shape, and the first sliding block 714 is slidably connected with the supporting plate 702.

[0031] By adopting the above technical scheme, the first sliding block 714 in a T-shaped structure can make the rack 713 keep stable during movement.

[0032] Further, the base 1 is provided with a discharge port 2 at the top.

[0033] Through the above technical scheme, after the straight cylinder is demolded, it falls into the discharge port 2 on the base 1, and the straight cylinder is collected through the discharge port 2 on the base 1.

[0034] Further, the second fixed plate 9 is fixedly connected to the top of the base 1, and the round rod 8 is fixedly connected to one side of the second fixed plate 9.

[0035] Further, the first fixed plate 3 is fixedly connected to the round rod 8, and the movable mold 5 is slidingly connected to the round rod 8.

[0036] Through the above technical scheme, the movable mold 5 can be aligned with the fixed mold 10 by sliding the movable mold 5 on the round rod 8.

[0037] Further, the second hydraulic oil cylinder 14 is fixedly connected to the inside of the second fixed plate 9, the connecting block 15 is fixedly connected to one side of the second hydraulic oil cylinder 14, the connecting block 15 is hingedly connected to the connecting seat 16, the second sliding block 17 is fixedly connected to one side of the connecting seat 16, and the sliding groove 18 is formed in one side of the fixed mold 10.

[0038] Further, the second sliding block 17 and the sliding groove 18 on the fixed mold 10 are both in a “T” shape, and the second sliding block 17 is slidingly connected to the sliding groove 18 on the fixed mold 10.

[0039] Through the above technical scheme, the T-shaped structure increases the contact area between the second sliding block 17 and the sliding groove 18 on the fixed mold 10, forms a stable sliding guide surface, and can effectively limit the deviation or risk of falling out of the second sliding block 17 in the movement.

[0040] Working principle: in use, start the first hydraulic cylinder 4, the first hydraulic cylinder 4 is driven to stretch out the movable die 5, the movable die 5 is slid on the round rod 8, after the movable die 5 and the fixed die 10 are closed, the first hydraulic cylinder 4 stops stretching out, then, the hot plastic is transported into the cavity 11 of the fixed die 10 and the core 6 of the movable die 5 through the plastic pipe 12, the hot plastic is cooled to form the required straight cylinder, then, the first hydraulic cylinder 4 drives the movable die 5 to retract to the set distance and then stops, then, the first cylinder 701 is started, the first cylinder 701 drives the support plate 702 to move in the movable die 5, the support plate 702 drives the fixed rod 704 to move, the fixed rod 704 drives the connecting rod 705 and the fixed block 706 to move out of the core 6 of the movable die 5, the fixed block 706 continuously moves to touch the bottom end of the straight cylinder, but the first cylinder 701 continues to stretch out, the fixed rod 704 extrudes the spring 707 sleeved on the connecting rod 705, and the connecting rod 705 moves into the fixed rod 704, at the same time, the fixed rod 704 drives the second fixed seat 711 and the second support arm 710, because the hinge joint of the first support arm 709 and the second support arm 710 is slightly arched outward, after the second support arm 710 drives the first support arm 709 to move, the first support arm 709 and the second support arm 710 change from the unfolded state to the folded state, until the hinge joint of the first support arm 709 and the second support arm 710 contacts the inner wall of the straight cylinder and clamps the straight cylinder, at this time, the first cylinder 701 stops stretching out, then, the second cylinder 716 is started, the second cylinder 716 drives the connecting plate 715 to retract, the connecting plate 715 drives the rack 713 to move, the rack 713 drives the first sliding block 714 to slide in the support plate 702, at the same time, the rack 713 drives the gear 712 to rotate, the gear 712 drives the first rotating block 703 and the fixed rod 704 to rotate, the fixed rod 704 drives the connecting rod 705 and the fixed block 706 to rotate, thereby, the first support arm 709 and the second support arm 710 drive the straight cylinder to rotate, the rotated straight cylinder will not be adhered to the cavity 11, then, the first cylinder 701 drives the support plate 702 to retract, in the retraction process, the spring 707 pushes the connecting rod 705 and the fixed block 706 to reset, also makes the first support arm 709 and the second support arm 710 reset, the first support arm 709 and the second support arm 710 do not clamp the straight cylinder, after the first cylinder 701 stops retracting, the connecting rod 705 and the fixed block 706 move back into the core 6, then, the first hydraulic cylinder 4 drives the movable die 5 to continue to retract, until the movable die 5 resets, then, the second hydraulic cylinder 14 is started, the second hydraulic cylinder 14 stretches out the connecting block 15 and the connecting seat 16, the connecting seat 16 drives the second sliding block 17 to slide in the sliding groove 18 on the fixed die 10, at the same time, pushes the fixed die 10 to move, the fixed die 10 drives the second rotating block 13 to rotate on the base 1, the straight cylinder in the cavity 11 will slide into the discharge port 2 on the base 1, then,The straight tubes are collected in bulk through the discharge opening 2 on the base 1.

[0041] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A structure for automatic rotational demolding of straight barrel injection molding, comprising a base (1), characterized in that: The base (1) top fixedly connected with the first fixed plate (3), the first fixed plate (3) inside fixedly connected with the first hydraulic oil cylinder (4), one side of the first hydraulic oil cylinder (4) fixedly connected with the dynamic mold (5), one side of the dynamic mold (5) fixedly connected with the core (6), the dynamic mold (5) is provided with the demoulding mechanism (7) of automatic rotation demoulding, the dynamic mold (5) inside fixedly connected with the first cylinder (701), one side of the first cylinder (701) fixedly connected with the support plate (702), the support plate (702) inside rotatably connected with the first rotating block (703), one side of the first rotating block (703) fixedly connected with the fixed rod (704), the fixed rod (704) inside slidably connected with the connecting rod (705), one side of the connecting rod (705) fixedly connected with the fixed block (706), the connecting rod (705) the rod body is sleeved with spring (707), one side of the fixed block (706) fixedly connected with the first fixed seat (708), the first fixed seat (708) with first support arm (709) hinged, the fixed rod (704) outer circular surface fixedly connected with the second fixed seat (711), the second fixed seat (711) with second support arm (710) hinged, the first rotating block (703) outer circular surface fixedly connected with the gear (712), the gear (712) with the rack (713) meshing connection, the rack (713) top fixedly connected with the connecting plate (715), the other side of the support plate (702) fixedly connected with the second cylinder (716), the base (1) with the second rotating block (13) hinged, the second rotating block (13) top fixedly connected with the fixed mold (10), one side of the fixed mold (10) is provided with the cavity (11), the fixed mold (10) top fixedly connected with the plastic pipe (12).

2. A structure for automatic rotational demolding of straight injection molding according to claim 1, characterized in that: The spring (707) both sides are fixedly connected with the fixed block (706) and the fixed rod (704), the first support arm (709) and the second support arm (710) are hinged.

3. A structure for automatic rotational demolding of straight injection molding according to claim 1, characterized in that: The connecting plate (715) is fixedly connected with the second cylinder (716), one end of the rack (713) is fixedly connected with the first sliding block (714), the first sliding block (714) is "T" type, and the first sliding block (714) is slidably connected with the support plate (702).

4. A structure for automatic rotational demolding of straight injection molding according to claim 1, characterized in that: The base (1) top is provided with the discharge port (2).

5. A structure for automatic rotational mold stripping of a straight barrel injection molding according to claim 1, characterized in that: The base (1) top is fixedly connected with the second fixed plate (9), and one side of the second fixed plate (9) is fixedly connected with the round rod (8).

6. A structure for automatic rotational mold stripping of a straight barrel injection molding according to claim 1, characterized in that: The first fixed plate (3) is fixedly connected with the round rod (8), and the dynamic mold (5) is slidably connected with the round rod (8).

7. A structure for automatic rotational demolding of a straight barrel injection molding according to claim 5, characterized in that: The second fixed plate (9) is fixedly connected with the second hydraulic oil cylinder (14), one side of the second hydraulic oil cylinder (14) is fixedly connected with the connecting block (15), the connecting block (15) is hinged with the connecting seat (16), one side of the connecting seat (16) is fixedly connected with the second sliding block (17), and one side of the fixed mold (10) is provided with the sliding groove (18).

8. A structure for automatic rotational demolding of a straight barrel injection molding according to claim 7, characterized in that: The second sliding block (17) and the upper slide groove (18) of the fixed mold (10) are respectively in "T" shape, and the second sliding block (17) is in sliding connection with the upper slide groove (18) of the fixed mold (10).

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